Unit 4 Study Guide 23-24

Match the following types of energy to their definitions:

• Energy a system has because of its motion

• thermal energy

• Energy caused by wave vibrations through matter

• sound energy

• Energy a substances has related to its temperature

• light energy

• Energy stored in chemical bonds of molecules

• mechanical energy

• Radiant energy that travels in electromagnetic waves

• chemical energy

According to the Law of Conservation of Energy. You cannot ___ or ___ energy.

• create; transfer

• create; destroy

• transfer; destroy

• create; move

Tags

NGSS.MS-PS3-5

Photosynthesis converts ___ energy to ___ energy

• light; chemical

• chemical; light

• chemical; heat

• heat; light

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A toaster converts ___ energy to ___ energy.

• light; electrical

• heat; electrical

• electrical; heat

• heat; light

A wind turbine and generator convert ___ energy to ___ energy.

• sound; electrical

• sound; mechanical

• electrical; mechanical

• mechanical; electrical

Alice is watching her mother make some tea. Her mother fills the tea kettle with water and plugs it into the outlet. She turns the switch on, causing it to glow red. Soon, Alice can see steam rising from the spout of the kettle. The steam builds until the kettle lets out a loud whistle. The diagram shows the kettle. Alice claims that energy is being transformed when her mother makes tea.  What transformations occur?  Choose the BEST answer.

• electrical -> light and heat -> sound

• sound- > electrical -> heat

• heat -> electrical -> sound

• electrical -> sound -> heat -> light

Tags

NGSS.MS-PS1-4

An electric fan is plugged into an outlet and the circuit completed, making the fan blades spin. Which of the following correctly describes this situation?

• Mechanical energy is transformed into electrical energy.

• Mechanical energy is destroyed, and electrical energy is created.

• Electrical energy is transformed into mechanical energy.

• Electrical energy is destroyed, and mechanical energy is created.

Tags

NGSS.MS-PS3-5

When you turn on a battery operated radio, what type of energy transformation takes place?

• sound energy to chemical energy

• electrical energy to chemical energy

• sound energy to electrical energy

• chemical energy to sound energy

Which of the following examples show this energy transformation?

Electrical -> Mechanical -> Sound 

• A pencil sharpener plugged into a wall outlet

• A projector displaying a diagram on the screen

• A working flashlight used to light up a dark corner

• A stove heating a pot of water.

Tags

NGSS.MS-PS3-5

Match the following terms to their definitions:

• Substances that do NOT transfer heat well

• insulators

• Transfer of heat by flow of currents in liquid or gas

• radiation

• Substances that transfer heat well.

• convection

• Transfer of heat through matter or through a vacuum

• conductors

• Transfer of heat by direct contact

• conduction

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4